[INFO] updating cached repository bencelaszlo/numerical-methods-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bencelaszlo/numerical-methods-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bencelaszlo/numerical-methods-rust" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/bencelaszlo/numerical-methods-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/bencelaszlo/numerical-methods-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bencelaszlo/numerical-methods-rust" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/bencelaszlo/numerical-methods-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/bencelaszlo/numerical-methods-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2fed8a65db7c024182bae4d95fcc176e04ddee05
[INFO] sha for GitHub repo bencelaszlo/numerical-methods-rust: 2fed8a65db7c024182bae4d95fcc176e04ddee05
[INFO] validating manifest of bencelaszlo/numerical-methods-rust on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of bencelaszlo/numerical-methods-rust on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing bencelaszlo/numerical-methods-rust
[INFO] finished frobbing bencelaszlo/numerical-methods-rust
[INFO] frobbed toml for bencelaszlo/numerical-methods-rust written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/bencelaszlo/numerical-methods-rust/Cargo.toml
[INFO] started frobbing bencelaszlo/numerical-methods-rust
[INFO] finished frobbing bencelaszlo/numerical-methods-rust
[INFO] frobbed toml for bencelaszlo/numerical-methods-rust written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/bencelaszlo/numerical-methods-rust/Cargo.toml
[INFO] crate bencelaszlo/numerical-methods-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking bencelaszlo/numerical-methods-rust against master#435236b8877cdb98c82eaebfb7887782277265c5 for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-0/master#435236b8877cdb98c82eaebfb7887782277265c5:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/bencelaszlo/numerical-methods-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7d872590c9b0fa353c17320d4f12ab29dc43652cdd385575cc4980a8b70de186
[INFO] running `"docker" "start" "-a" "7d872590c9b0fa353c17320d4f12ab29dc43652cdd385575cc4980a8b70de186"`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking coarsetime v0.1.10
[INFO] [stderr]     Checking numerical_methods_rust v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/main.rs:8:29
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::time::{SystemTime, Duration};
[INFO] [stderr]   |                             ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/main.rs:8:29
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::time::{SystemTime, Duration};
[INFO] [stderr]   |                             ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `start_time`
[INFO] [stderr]   --> src/main.rs:11:6
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let start_time = SystemTime::now();
[INFO] [stderr]    |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_start_time`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test_numbers`
[INFO] [stderr]   --> src/main.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let mut test_numbers: Vec<f32> = Vec::new();
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_test_numbers`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `max_iteration`
[INFO] [stderr]   --> src/integration.rs:69:41
[INFO] [stderr]    |
[INFO] [stderr] 69 | pub fn q_gauss_legendre(a: f32, b: f32, max_iteration: i32) -> f32 {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_max_iteration`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `start_time`
[INFO] [stderr]   --> src/main.rs:11:6
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let start_time = SystemTime::now();
[INFO] [stderr]    |         ^^^^^^^^^^ help: consider prefixing with an underscore: `_start_time`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test_numbers`
[INFO] [stderr]   --> src/main.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let mut test_numbers: Vec<f32> = Vec::new();
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_test_numbers`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `max_iteration`
[INFO] [stderr]   --> src/integration.rs:69:41
[INFO] [stderr]    |
[INFO] [stderr] 69 | pub fn q_gauss_legendre(a: f32, b: f32, max_iteration: i32) -> f32 {
[INFO] [stderr]    |                                         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_max_iteration`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let mut test_numbers: Vec<f32> = Vec::new();
[INFO] [stderr]    |         ----^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let mut test_numbers: Vec<f32> = Vec::new();
[INFO] [stderr]    |         ----^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 4.39s
[INFO] running `"docker" "inspect" "7d872590c9b0fa353c17320d4f12ab29dc43652cdd385575cc4980a8b70de186"`
[INFO] running `"docker" "rm" "-f" "7d872590c9b0fa353c17320d4f12ab29dc43652cdd385575cc4980a8b70de186"`
[INFO] [stdout] 7d872590c9b0fa353c17320d4f12ab29dc43652cdd385575cc4980a8b70de186